Adjustable Resistors

Adjustable resistors, also known as potentiometers, allow a degree of control over the resistance within a circuit. This gives them an advantage over other types of fixed resistor, depending on your needs.
They are composed of a fixed resistive element, and a slider that is able to pass along the element. This is what changes the resistance of the circuit, and it is usually controlled externally.

What are adjustable resistors used for?
Adjustable resistors are most commonly used for volume control in TV and radio. They can also be used as part of a light dimmer, to indirectly affect the level of light.

Types of adjustable resistor
Adjustable resistors largely vary based on material:

  • Wirewound adjustable resistors use a coil of resistance wire, and offer the highest performance.
  • Cermet adjustable resistors are composed of ceramic and metal. They can withstand high temperatures, and are often used in trimmer resistors.
  • Carbon composition adjustable resistors are some of the most common types used, as they are a good all-purpose resistor.
  • Conductive plastic adjustable resistors use conductive plastic ink, and have a low noise output.

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Description Price Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS庫存編號 788-7772
製造零件編號RSSD30250A1000JB06
BrandVishay
TWD2,653.00
單位
100 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 788-7722
製造零件編號RSSD10X50A5R60KS06
BrandVishay
TWD943.00
單位
5.6 Ω 10% 25W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 11.5 (Dia.) x 50mm 11.5mm 50mm +450°C
RS庫存編號 893-5112
製造零件編號D25K7K0E
BrandOhmite
TWD375.00
/個 (每包:25個)
單位
7 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4890
製造零件編號D25K2K0E
BrandOhmite
TWD547.00
單位
2 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4768
製造零件編號D100K5R0E
BrandOhmite
TWD920.00
單位
5 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 892-4910
製造零件編號D25K5R0E
BrandOhmite
TWD541.00
單位
5 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 788-7725
製造零件編號RSSD10X50A1R00KS06
BrandVishay
TWD662.00
單位
1 Ω 10% 25W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 11.5 (Dia.) x 50mm 11.5mm 50mm +450°C
RS庫存編號 144-5497
製造零件編號C300K10RE
TWD819.00
單位
10 Ω ±10% 300W ±400ppm/°C Solder Tubular Wire Wound - - 280 28.58 (Dia.) x 215.9mm - - +400°C
RS庫存編號 892-4825
製造零件編號D225K1K0E
BrandOhmite
TWD1,112.00
單位
1 kΩ ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 892-4793
製造零件編號D175K100E
BrandOhmite
TWD1,062.00
單位
100 Ω ±10% 175W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D175 28.6 x 215.9mm 28.6mm 215.9mm +350°C
RS庫存編號 136-3281
製造零件編號D50K4R0E
TWD697.00
單位
4 Ω ±10% 50W ±260ppm/°C Radial - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 167-9773
製造零件編號RA20117A10000KB10
BrandVishay
TWD2,157.00
個 (以毎盒:10)
單位
- - - - - - - - - - - - - -
RS庫存編號 788-7753
製造零件編號RSSD25168A1000JB06
BrandVishay
TWD2,324.00
單位
100 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS庫存編號 892-5752
製造零件編號D175K500E
BrandOhmite
TWD1,062.00
單位
500 Ω ±10% 175W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D175 28.6 x 215.9mm 28.6mm 215.9mm +350°C
RS庫存編號 892-4913
製造零件編號D50K10RE
BrandOhmite
TWD582.00
單位
10 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 893-1069
製造零件編號D225K30R-B
BrandOhmite
TWD431.90
/個 (每包:25個)
單位
30 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 161-7570
製造零件編號ZC3/6-FT
BrandCressall
TWD3,944.00
單位
650 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS庫存編號 893-0940
製造零件編號E300KR80E
BrandOhmite
TWD1,547.00
單位
800 mΩ ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 788-7841
製造零件編號RA20117A470R0KB10
BrandVishay
TWD2,300.00
單位
470 Ω ±10% 50W - Screw Tubular Wire Wound - - RA20117 - - - +350°C
RS庫存編號 788-7775
製造零件編號RSSD25168A47R0JB06
BrandVishay
TWD2,191.00
單位
47 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C